Name:~$ sudo update-pepperflashplugin-nonfree
[sudo] password for Name: 
sudo: update-pepperflashplugin-nonfree: command not found
Name:~$ sudo apt-get  update-pepperflashplugin-nonfree
E: Invalid operation update-pepperflashplugin-nonfree
Name:~$ sudo apt-get install pepperflashplugin-nonfree
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package pepperflashplugin-nonfree
Name:~$